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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2021
Earnings Per Share [Abstract]  
Computations of Basic and Diluted Net Income per Share
Basic earnings per share is calculated by dividing net income by the weighted average shares outstanding. Diluted earnings per share is calculated using the treasury stock method by dividing net income by the total weighted average shares of common stock outstanding and restricted stock awards. The computations of basic and diluted net income per share were as follows (in thousands, except per share amounts):

 
  
Three Months Ended March 31,
  
   
2021
    
2020
  
Basic:
            
Net income
  
$
15,950
    
$
11,245
  
Weighted average shares outstanding
    
26,393
      
26,687
  
                 
Basic net income per share
  
$
0.60
    
$
0.42
  
 
                
Diluted:
                
Net income
  
$
15,950
    
$
11,245
  
 
                
Weighted average shares outstanding
    
26,393
      
26,687
  
Restricted stock awards
    
494
      
83
  
Total
    
26,887
      
26,770
  
 
                
Diluted net income per share
  
$
0.59
    
$
0.42